Flash both images in one go.

The esptool will start executing the image after it finishes.

Also unify all Makefiles and ensure we do not use headers from the wrong architecture.
Run gpio_init() and ensure GPIO2 is toggled in Blinky.

Previously the if-statement was inverted so never actually changed anything.
Merge pull request #2 from tommie/master

Flash both images in one go, invert blinky really blink and remove need to define PIN_OUT